Résultats de la recherche

1. Do Adélie penguin fledgling weights provide an index of prey availability?

   to two assumed proxies of prey availability: breeding success and foraging trip duration. Concordance ... between the two proxies was apparent when considering guard stage foraging trip durations but this was not ... the end of the breeding season were more strongly correlated with later foraging trips than with ... earlier trips. We interpret these results as an indication of variable resources between the guard and ...

   Meeting Document : WG-EMM-05/21 : Auteur(s): L. Emmerson, C. Southwell and J. Clarke (Australia)

2. Estimating density and biomass of Antarctic krill (Euphausia superba) around South Shetland using the 2-dB difference method

   Abstract:  The distribution and abundance of krill aggregation inhabiting the Subarea 48.1, which ... includes the Elephant Island peripheries and the west and south of the South Shetland Island, were ... D. An Title:  Estimating density and biomass of Antarctic krill (Euphausia superba) around South ... Approved Delegation responsibility for releasing documents:  Korea, Republic of ...

   Meeting Document : SG-ASAM-18/08 : Auteur(s): S. Choi, K. Lee and D. An

3. Review of cetacean depredation in CCAMLR statistical subareas

   observed throughout the CCAMLR management area. Loss of fish through depredation can cause financial loss ... Abstract:  Depredation, the removal of fish from longlines by large marine predators, has been ... assessments through the underestimation of total mortality resulting from fishing and depredation combined. In ... other subareas the problem is known but not currently addressed. The areas in which the establishment of ...

   Meeting Document : WG-SAM-15/27 : Auteur(s): M. Soeffker (United Kingdom) and P. Tixier (France)

4. Distribution of the Soviet krill fishing fleet in the South Orkneys area (Subarea 48.2) during 1989/90

   north-east of the region. The fleet was observed drifting with the current together with krill ... Paper Title:  Distribution of the Soviet krill fishing fleet in the South Orkneys area (Subarea ... 48.2) during 1989/90 Abstract / Description:  The results of an analysis of haul-by-haul catch ... statistics from the Soviet krill fishing fleet during the 1989/90 season (sample of 3 614 hauls for the ... major current flowing towards the north-east of the region. The fleet was observed drifting with the ... CCAMLR Science, Vol. 5 (1998): 51-62 DISTRIBUTION OF ... . Sushin Atlantic Research Institute of Marine Fisheries and Oceanography (AtlantNIRO) 5 Dmitry Donskoy ... St. Kaliningrad 236000, Russia Abstract The results of an analysis of haul-by-haul catch ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 51–62 : Auteur(s): Sushin, V.A

5. Analysis of trawl data from the South Georgia krill fishery

   middle of the day. Daytime trawls were also generally deeper and produced a larger catch. Individual ... South Georgia are examined and a range of descriptive measurements reflecting the operation of the ... focussed, operating in a limited area along the shelf edge on the northern coast of the island. Each day a ... large number of trawls were undertaken by each,vessel, with trawls being shorter in duration during the ...

   Meeting Document : WG-EMM-97/41 : Auteur(s): Parkes, G., Trathan, P.N., Everson, I., Murphy, E.J.

6. An alternative method for estimating the level of illegal fishing using simulated scaling methods on detected effort

   Paper Title:  An alternative method for estimating the level of illegal fishing using simulated ... effort is put forward. The results from this new method are similar to those of the Agnew and Kirkwood ... (2005) method, and this suggests that the current method is adequate under circumstances of low evasion ... performs better in the case of zero detections and can potentially better handle the evasion of detection ... illegal fi shers will tend to curtail their fi shing, but if they are near the end of their trip they may ... the more complete calculation of illegal fi shing trip length to replace equation 4 could be ... should be noted that without loss of general- ity it would be possible to include a search area in this ... ): 143–161 143 AN ALTERNATIVE METHOD FOR ESTIMATING THE LEVEL OF ILLEGAL FISHING USING SIMULATED ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 143–161 : Auteur(s): Ball, I

7. Effects of variability in prey abundance on reproduction and foraging in chinstrap penguins (Pygoscelis antarctica)

   , number of trips day–1, trip duration, number of dives trip–1 and dive rate) did not differ between years ... Abstract:  Life-history theory predicts that adults of long-lived species such as seabirds should ... offspring provisioning, the most energetically costly component of seabird parental care, adults need to ... contend with large interannual fluctuations in prey availability and hence the cost of chick provisioning ...

   Meeting Document : WG-EMM-06/P6 : Auteur(s): D.A. Croll, D.A. Demer, R.P. Hewitt, J.K. Jansen, M.E. Goebel and B.R. Tershy (USA)

8. Diet and foraging effort of Adélie penguins in relation to pack-ice conditions in the southern Ross Sea

   Abstract:  We investigated the diet and aspects of foraging effort among Adélie Penguins ... , Bird and Crozier-- during the chick provisioning period of three austral summers, 1994-95, 1995-96 and ... 1996-97. During the study period, pack-ice cover differed in waters offshore of these colonies, by ... present. With respect to krill, which composed the remainder of diet, juvenile Euphausia crystallorophias ...

   Meeting Document : WG-EMM-98/15 : Auteur(s): D.G. Ainley (USA), P.R. Wilson, K.J. Barton (New Zealand), G. Ballard, N. Nur (USA) and B. Karl (New Zealand)

9. Adélie penguin foraging behaviour and breeding success in seasons of contrasting krill availability (Mawson Coast, Antarctica)

   period. Data on meal mass and foraging trip duration were combined to provide an index of provisioning ... penguins at the Béchervaise Island CEMP site were compared between seasons of contrasting krill ... differences between the two seasons included A5: foraging trip duration, A6: breeding success and A8: meal ... particularly apparent during the late guard to early crèche stages of chick rearing, coinciding with the timing ...

   Meeting Document : WG-EMM-03/44 : Auteur(s): J. Clarke, M. Tierney, S. Candy, S. Nicol, L. Irvine and K. Kerry (Australia)

10. The diet of Antarctic fur seals Arctocephalus gazella during the breeding season at Heard Island

    summer season and again at the end when there was an influx of non-breeding male seals. During the middle ... Heard Island fed mainly on fish with an average 95.2% of scats in monthly collections containing fish ... remains. Pelagic myctophids constituted more than 50% of fish taken by fur seals at the beginning of the ... period from October to December, fish from the surrounding shelf area comprised the bulk of the diet ...

    Meeting Document : SC-CAMLR-VIII/BG/53 : Auteur(s): Delegation of Australia

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